In 1982, a physics joke gone wrong sparked the invention of the emoticon
On September 19, 1982, Carnegie Mellon University computer science research assistant professor Scott Fahlman posted a message to the universityβs bulletin board software that would later come to shape how people communicate online. His proposal: use :-) and :-( as markers to distinguish jokes from serious comments. While Fahlman describes himself as βthe inventorβ¦ or at least one of the inventorsβ of what would later be called the smiley face emoticon, the full story reveals something more interesting than a lone genius moment.
The whole episode started three days earlier when computer scientist Neil Swartz posed a physics problem to colleagues on Carnegie Mellonβs βbboard,β which was an early online message board. The discussion thread had been exploring what happens to objects in a free-falling elevator, and Swartz presented a specific scenario involving a lit candle and a drop of mercury.
That evening, computer scientist Howard Gayle responded with a facetious message titled βWARNING!β He claimed that an elevator had been βcontaminated with mercuryβ and suffered βsome slight fire damageβ due to a physics experiment. Despite clarifying posts noting the warning was a joke, some people took it seriously.


Β© Benj Edwards / DEC